Past tense irregular verbs

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Across
  1. 1. buy
  2. 3. win
  3. 5. fight
  4. 6. bring
  5. 9. begin
  6. 11. write
  7. 12. catch
  8. 15. drink
  9. 17. grow
  10. 18. sit
Down
  1. 2. think
  2. 4. forgive
  3. 6. buy
  4. 7. throw
  5. 8. swim
  6. 10. become
  7. 13. hold
  8. 14. teach
  9. 16. know